Pick-Up Fails; The Scanning Lamp Fails To Go On - Canon PC400 Service Manual

7. Pick-up fails.

Cause
Main motor (M1)
Pick-up sensor (Q131)
Pick-up solenoid (SL1;
PC420/430/FC220),
Registration solenoid
(SL1; PC400/FC200)
DC controller/
DC power supply PCB

8. The scanning lamp fails to go ON.

Cause
Scanning lamp
(LA1-LA8)
Scanning lamp
(LA1-LA8)
DC controller/DC
power supply PCB
Connector
COPYRIGHT © 1998 CANON INC.
Step Checks
1 Move the copyboard to the left
until it stops, and open the top
cover. Does the pick-up roller
rotate when the door switch is
turned ON and the Copy Start
key is pressed at the correct
pick-up timing?
2 Is the main motor rotating?
3 Does the copier operate nor-
mally when the pick-up sensor
(Q131) is blocked with paper?
4 Set the meter to the '30VDC'
range. Does the voltage
between J201-6 (+) and J201-7
(-) on the DC controller/DC
power supply PCB change to
about 24 V at pick-up timing?
Step Checks
1 Is the scanning lamp unit
attached correctly?
2 Is the scanning lamp black?
3 Is the connector of the scanning
lamp connected firmly?
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
YES/NO Remedies
YES See "Pick-Up Assembly" in
"Troubleshooting Feeding
Faults."
NO See "The main motor fails
to rotate."
YES Check the sensor lever.
YES Check the spring clutch in
the registration assembly
and pick-up assembly; if
normal, replace the
solenoid.
NO Check the wiring from the
solenoid to the DC con-
troller/DC power supply
PCB; if normal, replace
the DC controller/DC
power supply PCB.
YES/NO Remedies
NO Re-attach the lamp unit.
YES Replace the scanning
lamp unit.
YES Replace the DC controller/
DC power supply PCB.
NO Re-connect the connector.
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